Family story indicates that Patrick Sheridan of Breffni Terrace in Cavan town enlisted in service during WWI.
Not sure if he enlisted under the British forces or the Irish Free State forces. According to the story he never returned to Cavan. Another story has him in England or Scotland. Is there any way or any web site where one can research these things?

He was the son of Patrick Sheridan and Anne Clerkin Sheridan of 1 Breffni Terrace in Cavan town. He was born on March 11, 1884 in Derrycramp, Cavan, County Cavan.

If anyone can shed any light on how I can research this it would be very much appreciated.